A Windows Communication Foundation (WCF) client application is consuming an RSS syndication feed from a blog.You have a SyndicationFeed variable named feed. The application iterates through the items as follows.(Line numbers are included for reference only.) 01 foreach (SyndicationItem item in feed.Items) 02 { 03 } You need to display the content type and body of every syndication item to the console.Which two lines of code should ou insert between lines 02 and 03?（） ["
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","
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","
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","
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"]
生态因子作用作用特征包括（）、（）、（）、（）、（）。
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试述点火提前角对汽油机燃烧的影响？
